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Acidic ASPEC® Alumina solid phase extraction (SPE) cartridges contain a high-quality, polar sorbent used in the same way as ASPEC® Silica but with a better pH stabililty (range of 4.0 – 5.5). The acidic character makes it useful for separation of acid pigments, strong acids, phenols, sulfo...

Basic ASPEC® Alumina solid phase extraction (SPE) cartridges contain a high-quality, polar sorbent used in the same way as ASPEC® Silica but with a better stabililty at high pH (range of 8.0 – 9.5) . The basic character makes it more selective for basic and neutral compounds.ASPEC Ready fo...

Neutral ASPEC® Alumina solid phase extraction (SPE) cartridges contain a high-quality, polar sorbent used in the same way as ASPEC® Silica but with a better stabililty at high pH (range of 6.0 – 7.5) . The neutral character provides a good retention of Aromatic compounds, Aliphatic Amines...